Hand-power drill.



L. S. PFOUTS.

HAND POWER DRILL.

APPLIOATION FILED DEG. 16, 1905. RENEWED DEC. 4, 1908.

Patented Feb. 9,

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L. s. PFOUTS.

HAND POWER DRILL.

APPLICATION FILED DEG 16, 1905. RENEWED DEC. 4, 908- Patented Feb. 9, 1909.

- clear, and exact descri tioh of-the same, ref-'- UNITED STATESPAQTENT OFFICE.

LEROY S. PFOUTS, OF CANTON, OHIO, ASSIGNOR, BY MESNE ASSIGNMENTQTO THE CYCLONE DRILLQOMPANY, A CORPORATION .OF OHIO.

HAND-POWER DRILL.

Specification of Letters rec nt.

Patented Feb. 9, 1909.

Application filed December 16, 1905, Serial No. 292,037. Renewed December 4, 1908. Serial No. 465,980.

To all whom itmay concern:

Be it kno'wn that I, LnRoY S. ProUTs; a

ton, in the county of Stark and: State of Ohio,

. have invented certainnew' andcaiseful Imrovements in Hand PowerDrills and I do ereby declare thatwthefollowing is a full,

erence being had to-t eannexed drawing,..

making a part of this specification, and to the numerals of reference marked thereon,

in which I Figure. 1 is a side elevation showing thedrill properly attached to a post or standard- Fig. 2 is asection on line'2.2, Fig. 6. Fig. 3 is a detached view'of the rear vibrating drill carriage, carrying arm. Fig. 4 is a detached view of the T rod and its head designed to hold the drill carriage out of rea ciprocating action. Fig. 5 is a plan view of the drill and its different parts properly assembled. Fig. 6 is a longitudinal vertical section.- Fig. 7 is a detached view of the drill socket and its parts. i

The presentinvention has relation'to hand power drill-s and it consists in the novel arrangement hereinafter described and particularly pointed out in the claims.

Similar numerals of reference indicate cor responding parts in all the figures of the drawing. v r I In the accolnpanying drawing, 1 re resents the standard, which is designe to support the drill at the required height and of'course is of the usual: construction and forms no part of the present invention, ex

ce'pt that a standard or su port of some kind must be employed. The standard is rovided with the right angled flange or hearing 2, shown in cross section Fig; 1, to

which flange or extension the divided head- 3 is attached and clamped by means of the bolts 4. To the upper member of the divided head 3 is pivotally attachedthe angled flange 5 to which angled flangeis attached the drill frame connecting flange 6 by means of the clam ing bolt 7... The construction just above escribed. is all common in drills baseBis formed of a-size to' pnAperly-support' of this class and is illustrated and described simply to better show a complete operating devlc'e within itself. .4

The base or drill mechanism supporting and carry the various devices esigned to be connectediand carried and maybe of the screw threaded shaft is journal'ed-in the bar lfOilIl shown in the drawings. To the base or support are attached or formed integral therewith the guide plates 9, which guide plates are formedof a le th to corres 0nd substantially with the length of the ass.

The guide plates 9 are-provided with the flanges 10,' which flanges are for the purpose of producing'grooves, and inwhich grooves 2 are located the flanges 11 which flanges are formed of a size to correspond substantially with the size of thegrooves, producedor formedby the flan es 10. The-flanges 11 are extended .from .t e bottom or lower ends or edges. of the spaced vertical plates 12, which spaced vertical plates are held in proper spaced relation with reference to each other at their ends by means of the cross heads 13 and 14, which'cross' heads are preferably'formed integral with the spaced verticalplates 12. I 1

For the purpose of providing a means for moving the spaced vertical p ates 12 back and forth upon, the base or support 8 the screw threaded shaft 15 is provided, which 16, which bar held in fixed relative position with reference to the base or support 8 by means. ofthe rearward extending.- rods 17 and the nuts 18'. To the screw threaded shaft15 is attached in the ordinary manner the crank 19. The screw threaded shaft 15 is located through the nut 20, which. nut is connected to the rear cross head 14 as best.

illustrated in Fig. 6. It will be understood that-byrotating the screw threaded shaft 15" in one direction the vertical plates 12 to- .gether with the difierent parts connectedjournaledin the upper portion of the cross head13; as best illustrated in Fig. 6. For

tot

fixed to the head 22 in any convenient and well known manner. The shaft 24 is pro- Vided' with the Worm 25, which 'worm The drill' 21 is slidably connected to the rotatable head 22, which rotatable head the 1purpose of imparting a rotary movement e head-22, said head is provided with the worm gear wheel 23, which gear wheel is meshes with the worm gear wheel 23 as illustrated in Fig. 2. Upon the shaft 24 is mounted the sprocket wheel 26, which sprocket wheel together with its shaft and worm is rotated by means of the drive chain 27, which drive chain extends around the.

Shaft 32.

It is well understood that in operating drills of this class and kind it is necessary to provide means for connecting the crank upon both sides of the drill proper, and in order to provide for this shifting of the crank both ends of the power shaft are so formed that the crank can be attached at either end.

To the spaced vertical plates 12 are pivotally attached the vibrating brackets 33 and 34, which vibrating brackets carry thehammer head together with the different parts pertaining to said hammer head. The hammer head 35 is provided with the rearward extended forked portion 36, and the hammer head 35 is provided with the lateral lugs or flanges 3 7 and the vibrating brackets 33-and 34 are pivotally attached to the hammer head at their upperor free ends by means of the bolts 38 and 39. Upon the shaft 29 is mounted the double tappet cam 40, which tappet cam is so located that as the shaft 29 rotates the cam will come in contact with the' anti-friction roller 41, which anti-friction roller is located upon the bolt 39, and by the,

rotation of the cam 40 the bracket 34 will be carried rearward, which movement carries the hammer head 35 backward and away from the rotating-drill head 22 and the rear end of the drill 21. For the purpose of imparting a quick forwar'd movement of the ammer head 35, after the vibrating bracket;

34 has been carried rearward by the cam 40 a distance suflicient to release the contact between the anti-friction roller 41 and the cam 40 the springs 42 are provided, which springs are attached at their ends to the flanged heads 43 on the bolts 38 and the conical headed bolts 44, which conical.

headed bolts are attached to the cross bar 45 as best illustrated in Fig.- 5. It will be understood that by the rotary movement of the shaft 29 a reciprocating movement will be imparted to the hammer head 35, and owing to the action of the springs 42 a quick blow will be given to the drill 21.

For the purpose of providing a means for rotating the drill 21 with the rotation of the head 22, said drill is provided with the flat faced portion 46, against which flat faced portion is seated the flat faced or edged block 47, which block is held in fixed position with reference to the head 22 by means of the band 48 and for the purpose of holding said band the cross pin 49 is provided, which cross pin is located in the semi-circular grooves 50 formed in the head 22 and the band 48 respectively, said pin being Located as illustrated in Fig. 6, and the block 17 seated in the recess 51.

For the purpose of allowing a reciprocating movement of the drill 21 the flat faced portion 46 is formed of a length greater than the width of the block 47 thereby permitting the drill 21 to rebound or move backward after a blow has been delivered upon the rear'end of the drill 21 or its shank, thereby bringing the rear end of said shank beyond the rear end of the rotating head 22 so that the blow of the hammer head 35 can be given directupon the rear end of the drill 21.

For the purpose of cushioning the .blow of the hammer head 35 as between said hammer head and the head 22 the rear end of the head 22 is recessed and in the recess is located the rubber or other elastic block or head 52.

By the device above described and in which arrangement it will be understood that when rotary motion is imparted to thepower shaft 32 a rotary motion will be imparted to the drill 21 and a series of blows or hammer strokes given to the rear end of the drill, thereby providing means for imparting a succession of blows or strokes upon the material being operated upon, and as the drill advances to feed forward by means of the screw threaded shaft 15.

It is well understood that in drilling certain kinds of material it is not necessary to impart blows upon the material being drilled, and a continuous rotary movement of the drill is all that is necessary. When it is desired to operate the drill without imparting blows the hammer head together with its different parts is brought out of action by means of the T headed rod 53, which T headed rod is located substantially as shown in Fig. 6, and upon which rodis mounted the knob or head 54, which knob or head is provided with ascrew threaded aper ture and is located upon the screw threaded portion of the T headed rod 53. The oscillating bracket 34 is provided with the re- -cessed flange '55, which recessed llango is so formed that the open recesses 56 will receive the T head 57, and by rotating the knob or head 54 in one direction the bracket 34 will be moved rearward, which movement brings the anti-friction roller 41 out of engagement with the cam 40, thereby allowing said cam to rotate withoutimparting any action to the vibrating bracket or the parts connected thereto. When it is desired: to bring all of the parts into action by which a rotary and striking blows are imparted or given to the drill the T head bar 53 is, or should be entirely removed.

Having fully described my invention what I I-cl'aim as new and desire to secure by Letters head carried, by the vibrating brackets and one-of the brackets provided with an antifriction roller, a cam adaptedto actuate. one

of the vibrating brackets roller, means'for holding the actuated bracket y the anti-friction and its anti-friction roller out of contact with the cam,,a drill head and a drill carried thereby, and means for rotating the drill head and as and for the purpose drill, substantially specified.

2. In a'drill of the class described a base supported in proper elevation, slidab e mombers carried thereby, 'a drill head bearing carried by said sliding plates and a drill hea located therein, and a drill carried by the head, the drill head provided witha worm gear wheel, a worm adgfiited to actuate the worm gear wheel and d head, a reciprocating hammer head means for reciprocating the hammer head, and means, for holding the hammer head out of action and "means for rotat'ing the drill head and drill inde endent of the reciprocatingmovement of t e hammer head, substantially as' and for the purpose specified;

In testim n that I claim the above, I have hereunto subscribed myname in the presence of two witnesses.

LEROY S. PFQUTS. 

